JPS54137472A - Production of branched pipe - Google Patents

Production of branched pipe

Info

Publication number
JPS54137472A
JPS54137472A JP4533778A JP4533778A JPS54137472A JP S54137472 A JPS54137472 A JP S54137472A JP 4533778 A JP4533778 A JP 4533778A JP 4533778 A JP4533778 A JP 4533778A JP S54137472 A JPS54137472 A JP S54137472A
Authority
JP
Japan
Prior art keywords
base
hole
pipe
production
branched
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4533778A
Other languages
Japanese (ja)
Inventor
Masayoshi Hashiura
Kiyohide Koizumi
Masao Miyawaki
Takeshi Miyauchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4533778A priority Critical patent/JPS54137472A/en
Publication of JPS54137472A publication Critical patent/JPS54137472A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To effectively provide a branched portion in a base pipe, the base pipe hole is treated by the self turn and orbital motion of a rotating roller.
CONSTITUTION: A base pipe 1 having a base hole 3 is fixed and a rotary roller 9 is positioned into the base hole 3 to be set by a support fixture 11. While controlling the momentum of the self turning, orbital motion, and axial movement of the rotary roller 9, the base hole is worked maily by bending so as to form a branched portion 2 having a desired diameter and height. Thus, a branched pipe is effectively manufactured in a small work number.
COPYRIGHT: (C)1979,JPO&Japio
JP4533778A 1978-04-19 1978-04-19 Production of branched pipe Pending JPS54137472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4533778A JPS54137472A (en) 1978-04-19 1978-04-19 Production of branched pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4533778A JPS54137472A (en) 1978-04-19 1978-04-19 Production of branched pipe

Publications (1)

Publication Number Publication Date
JPS54137472A true JPS54137472A (en) 1979-10-25

Family

ID=12716473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4533778A Pending JPS54137472A (en) 1978-04-19 1978-04-19 Production of branched pipe

Country Status (1)

Country Link
JP (1) JPS54137472A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5719113A (en) * 1980-07-09 1982-02-01 Hitachi Ltd Manufacture of t-joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5719113A (en) * 1980-07-09 1982-02-01 Hitachi Ltd Manufacture of t-joint

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